Question

The nonprofit group public agenda conducted telephone interviews with a stratified sample of parents of high school children. there were 202 black parents, 202 hispanic parents, and 201 white parents. one question asked was are the high schools in your state doing an excellent, good, fair or poor job, or don't you know enough to say? here are the survey results:

Answer 1

Answer:

Explanation:

According to the attached diagram showing distribution of parents’ opinion in each group of parents?

Plan: Chi-Squared Test for Homogeneity of Populations ,

² = ∑(−)² / p

let α = .05 and

₀:ℎ ℎ ℎ

ₐ:ℎ ℎ ℎ s

Show: All participants were selected randomly and we’ll assume there are more than 6050 parents. All expected counts

are greater than or equal to 5.

Do: ² = 22.42 p-value = .004 with df= 8

Interpret: Because the p-value = .004 < = .05, reject 0. Evidence suggests the distributions of opinion are not the

same in each group of parents